Patents by Inventor Nobuhiro Totoki

Nobuhiro Totoki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Four-wheel steering system for vehicle
    Patent number: 5341294
    Abstract: In a four wheel steering system, the rear wheel turning mechanism is connected to the front wheel turning mechanism by way of a rear wheel turning angle ratio changing mechanism which is mechanically connected to both the front wheel turning mechanism and the rear wheel turning mechanism and transmits the mechanical displacement input thereinto from the front wheel turning mechanism to the rear wheel turning mechanism to drive the same by an amount the ratio of which to the amount of mechanical displacement input into the rear wheel turning angle ratio changing mechanism gives a predetermined rear wheel turning angle ratio. The rear wheel turning angle ratio changing mechanism is controlled in such a way that, when the front wheels are turned from the neutral position in a middle vehicle speed range, makes the rear wheel turning angle ratio negative for a moment immediately after initiation of turning of the front wheels and thereafter turns the same positive.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: August 23, 1994
    Assignee: Mazda Motor Corporation
    Inventors: Hirotaka Kanazawa, Takeshi Edahiro, Hiroki Yoshioka, Nobuhiro Totoki, Hiroyuki Noda, Takashi Nakashima, Hiroshi Ohmura, Takeshi Murai, Ryuya Akita